package com.achen.service;

import com.achen.pojo.Member;

import java.util.List;

/**
 * @author achen
 * @create 2020-04-21 22:10
 */
public interface MemberService {
    //根据用户输入的手机号查询该用户是否是会员
    Member findByTelephone(String telephone);

    //添加用户成为会员
    void addMember(Member member);

    //根据月份查询会员的数量
    List<Integer> findMemberCountByDate(List<String> list);
}
